kernel security?

From: Timothy S. Bowers (tim@nol.co.za)
Date: 12/18/01 

Date: Tue, 18 Dec 2001 15:30:51 +0200
To: security@freebsd.org
From: "Timothy S. Bowers" <tim@nol.co.za>

Hi,

I'm running FreeBSD 4.4Stable
Can anyone tell me what is happening to my system ?

The following appears on the console and then the PC reboots. This happens about once a day.
I'd appreciate it if anyone could send me in the right direction.

---------------------------------------------> snip ---------------------
Fatal trap 12: page fault in kernel mode
fault virtual address = 0xc0ba991f
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc017ac83
stack pointer = 0x10:0xd3515e30
frame pointer = 0x10:0xd3515e54
code segment = base 0x0, limit 0xfffff, type 0x1b
                      = DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL=0
current process = 588 (httpd)
interrupt mask = net tty
trap number = 12
pannic: page fault

Automatic reboot in 15 seconds.
----------------------------------------> snip ------------------------

Thanks,
Timothy

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